AOPA Online Members Only - 50th Anniversary of the Cessna 172 - Photo Undated: Roy Schmidt, vice president of John G. Kelly, Inc., Long Island, New York, pictured with his wife Mona, posed in front of Cessna's 30,000th airplane  a Cessna Model 172.

Undated: Roy Schmidt, vice president of John G. Kelly, Inc., Long Island, New York, pictured with his wife Mona, posed in front of Cessna's 30,000th airplane - a Cessna Model 172. Schmidt's firm originally leased the airplane, but the company decided to purchase it after flying it only 25 hours.